Lifting-jack.



UNITED STATES Patented October 6, 1903.

PATENT OFFIC LlFTlNG-JAC K.

SPECIFICATION forming'part of Letters Patent No. 740,597 dated October 6, 1903.

Application filed July 21, 1903. Serial No. 166,479. (No model.)

consists in certain devices whereby when the box is being jacked up the car-wheel will be held down on the rail instead of rising off the rail, as it is liable to do under these circum-' stances. I am aware that devices for this purpose have before this been associated with liftingjacks, and I make no broad claim thereto.

My invention resides in an improved construction and arrangement of parts whereby the device as a whole is simplified, made very strong and effective, is easily and readily adjustable, and is conveniently applied to and united with the body'of the jack.-

I will first describe this improved construction in connection with the drawings accompanying and forming part of this specification and will then more particularly point out in the claims that which I believe to be new and of my invention. 7

In said drawings, Figure l is a plan of my improved jack. Fig. 2 is a side elevation of the same. detached. Fig. a is a view of the jackin place under the j ournal-box of a car.

The jack proper is of substantially the ordinary construction, consisting of the base A, the screw B, threaded into the base and provided with the ordinary head I), with holes therein for reception of the lever bywhich the screw is operated, the head B being surmounted by the usual swiveled bearing-block C. In order to prevent the jack from accidentally slipping out from under the j ournalbox to which it may be applied, the bearingface of the block 0 is covered with a number of steel spurs or pins 0, as shown.

Located upon one side of the base A are two stout parallel guide bars D, which conveniently can be cast in one with the base and which form a guideway and receptacle for the Fig. 3 is a view of the gooseneck' holddown device about to be described. This gooseneck, made, preferably, of stout wrought metal having a vertical limb E,which fits between the guide-bars D, and extending from the top of the limb E is a downwardly and outwardly inclined limb F, the outer and lower end of which is designed to engage and bear down upon the rim of the car-wheel when the jack is in use, as in Fig. 4. The vertical limbE is held practically throughout its length firmly. between the guide-bars D, and thus supported against lateral movement and strains, while at its back or vertical inner face it bears against the case A of the jack. It is held in place by removable pins or bolts G, which pass through holes formed in the guide-bars D and vertical limb E, respectively, and in order that the gooseneck may be readily and conveniently adjusted vertically according to the position of the rim of the car-wheel the limb E has a number of holes 6 formed in it throughout its length, so that any of these holes at pleasure may be brought into register with the holes in the guide-bars. D. For the same purposeviz., to adjust the holddown-limb F to the requirements of its workthis limb is preferably made in two sections, the lower section f being adjustable upon the other section, so as to vary the Working length of the limb, and being for this purpose formed as a tap'screwing upon the screw-threaded end of the upper section of the limb, as plainly illustrated in the drawings. In most cases the bodily adjustment of the gooseneck up and down in the guideway formed by the bars D will suffice. The adjustment at f is used only in'e'xtraordiuary cases when closer and more minute adjustments are to be made than can be obtained by the adjustment between the guide-bars D D. g

Having described my improvement, what I claim herein as new and of my invention 1s-- 1. A lifting-jack for the purpose specified consisting of the lifting-jack proper, vertical guide-bars D rigidly fixed on the side of the base of the jack, a gooseneck having a vertical limb E fitting and vertically adjustable in the guideway formed by the two bars D, and a holddown-limb F extending in inclined holddown device is what may be termed a ISO direction downwardly and outwardly from the upper end of limb E, and means for holding the vertical limb E in its adjusted position between the guide-bars D, as set forth.

2. A lifting-jack for the purpose specified consisting of the lifting-jack proper, parallel vertical guide-bars D on the side of the base of the jack, a gooseneek having a Vertical limb E fitting and vertically adjustable in 10 the guideway formed by bars D, and a holddown-liinb F extending in inclined direction downwardly and outwardly from the upper WILLIAM WALLACE SIMONTON.

\Vitnesses:

W. Q. COLE, O. O. CAMPBELL. 

